Reenforced insulator



1,613,464 Jan 4 1927 w. D. KYLE REENFORGED INSULATOR Filed Marh 9. 1925w/TNES s55 ATTORNEY.

.Patented Jan. 4, 1927.

vUNITED STATES 1,613,464 PATENT orrlcr..

WILLIAM D. KYLE, OF MILWAUKEE, WISCONSIN, ASSIGNOR T LINE MATERIAL COM-IANY, OF SOUTH MILWAUKEE, WISCONSIN, A CORPORATION 0F WISCONSIN.

BEEN FORCED INSULATOR.

Application led March AThe invention relates to insulators, moreparticularly of the type adapted to be secured to a stationary support.

,An object of the invention is to provide an insulator which isreenforced by a metallic strap surrounding an end and opposite sides ofan insulator body and having a fastening member passing therethrough,an, at-

taching member being secured in the insu-J lator body at one end againstrelative rotation and projecting through the strap to clamp theinsulator body against a support.

Another object of the invention is to provide an insulator of this typein which a threaded attaching member embedded or inserted therein at:one end against relative rotation may be turned by means of a toolinserted into a transverse opening in the insulator body withoutsubjecting the reenforcing strap to twisting stra-ins.

The invention further consists in' the several features hereinafter setforth and more particularly defined in the annexed claims.

n the accompan ing drawings; Fig. 1 is a top or bottom p an view of aninsulator embodying the invention secured to a sup- Port; p

Fig. 2 is a longitudinal sectional view thereof taken on the line 2-2 ofFig. 1;

Fig. 3 is a rear end view` thereof;

. Fig. 4 is a perspective view of the attaching strap; and

Fig. 5 is a fragmentary sectional viev1` of a modified form ofinsulator.

IIn these drawings, indicates an insulator body of porcelain, or othersuitable insulating material, which is provided with a transversewire-receiving opening 11 and a second transverse openlng: 12 spaced,for-I wardly from opening 11 and disposed at right-angles thereto. Anattaching screw 13 'is provided with a polygonal head 14 inserted inaregisterin polygonal opening 15 in the rear end of t e insulator bodyand there held rigidly in place by a cement or lead filling 16. If' leadis used it is preferably calked around the screw to produce a tight fit.Y.

A U-shaped metal strap 17 has an opening 18 in its transverse portion toreceive the attaching screw therethrough and has its legs -19 disposedin Channels 2K0 on opposite Sides of the insulator. f AKchannel' 21across the end of the insulator isadapted to receive the transverseportion of the strap 9, 1925. Serial No. 14,195.r

where it rests in spaced relation to the adjacent end surfaces 22 on theinsulator body. The legs 19 of the strap are provided with alignedopenings 23 near their ends adapted to register with the opening 12 inthe insulator body to receive therethrough a cotter pin 24; or othersuitable fastening element for retaining the strap in place on the.insula-torbody.

When mounting the insulator` the attaching screw 13 is started into aIsupport 25 and screwed therein by a turning tool 26 inserted in thetransverse opening .11 until the end ,surfaces 22 of the insulator bodyare brought into clamping engagement with the sup- T port 25, in whichposition the transverse portion of the reenforcing strap is spaced .fromthe support, as seen in Figs. 1 and-2, so that it will not affect therigid mounting of the insulator. When turning the attaching screw intothe support, the driving force is communicated. directly to the head ofthe screw by vreason of itstit in the opening 15, thus avoiding anytwisting or distort-ion of the reenforcing strap which might cause thelatter to leave the channels in the insulator body.

' The conductor 27 to be supported by the insulator may then beintroduced through the opening 11 where it may be held by a suitabletie-wire engaging the groove 11' extending about the head of theinsulator l and communicat-ing with the opening 11, or ,the relation ofthe wires may be reversed.

In many instances, a line wire may approach l the insulator in suchdirection as to impose an axial stress on the insulator, and in suchcases, the porcelain or other insulating .material is relieved of aheavy load by the reenforcing relation of the metal strap. SinceI theporcelain itself engages the support at substantial radial l.distancesfrom -the attaching screw, the insulator is also properly able towithstand lateral stresses incident tothe attachment ofthe conduct-orwire at various angles of approach. y

In that form of the invention shown 1n Fig. 5, the insulator body 10 isprovided at its rear end with a poly onal opening 15' 1n which fits thepolygona head l14 of the attaching screw 13, the cement 4or lead fillingbeing omitted from the opening and the reenforcing strap serving toretain` the vhead ofthe screw in the opening. The head of theattaching-screw will remain in driving lUU engagement with the walls ofthe recess, so that it may 'be turned directly :by the insulator bodyand thus avoid twisting or` distortion of the reenforcing strap.

What I claim as new and desire to secure by Letters Patent is:

1. In an insulator,ethe combination of an insulator body having a pairof spaced transverse openings extending therethrough at right angles toeach other, a threaded attaching member having a part embedded againstrelative rotation in one end of said insulator body and adapted to beturned thereby, a U- shaped met-al strapi engaging the rear end andopposite sides of the insulator body and provided with an opening 1n itstransverse portion through which said attaching member passes andopenings in its leg portions adapted to register with the forwardtransverse opening in said insulator body, and a fastening elementpassing through said lastnamed openings for retaining the strap on theinsulator body.

2. In an insulator, the oombination'of an insulator body having atransverse opening extending therethrough and a channelextendingtransversely across one end at right angles to said transverse opening,a threaded' attaching member having a part embedded` against relative.rotation in said end of the insulator body and adapted to be turnedthereby, a metal strap having a portion disposed in 'said channel inspaced relation to the end surfaces of the insulator body and havinglaterally-extending parts adapted to engage opposite sides of saidinsulator body, and a fastening element securing said strap on theinsulator bod in front of said transverse opening, sai Einsulator bodybeing adapted to be screwed into a support with its end abuttingthereagainst and said strap be-` ing spaced out of clamping engagementwith said support. i

3. In an insulator, the combination of an insulator body having a pairof spaced transverse openings extending therethrough at right-angles toeach other and having a channel extending around one end and oppositesides in the plane of the forward recess, there being an axiallydisposed ploygonal opening in the end of said insulator body and openingat said channel, a threaded attaching member having a polygonal headregistering with said polygonal opening and rigidly embedded thereinagainst relative rotation, a U-shaped metal strap disposed in'A saidchannel to engage the end and opposite sides of the insulgator body and,provided with an opening in said transverse portion through which saidattaching member passes and openings in its leg portions adapted toregister with the forward transverse opening in said insulator body, anda fastening element passing through said last-named openings forretaining the strap on the insulator body in spaced relation to the endthereof, whereby the end of the insulator body may abut against asupport into which said attaching member is screwed.

4. In an insulator, the combination of an 'insulator body having atransverse opening extending therethrough and a polygona opening at oneend thereof, a threaded attaching member having a polygonal head fittingin said opening to permit turning of said member by the insulatorbody,areinforcing strap engaging saidend and opposite sides of said insulatorbody and having an opening through which said attaching memberextends,and a fastening element securing said strap on the insulator body infront of said transverse opening.

5. In an insulator, the combination of an insulator body having atransverse opening extending therethrough, an attaching screw secured inone end of said insulator body against relative rotation to permitturning of said screw, by said insulator body, are- .enforcin'g strapengaging said end and opposite sides of said insulator body and ,havingan opening through which said screw passes. and fastening means disposedinfront of said transverse opening securing said strap on the insulatorbody.

6. In an insulator` the combination of an insulator body having atransverse opening therethrough and a transverse channel eX- tendingacross one end at right angles to said opening, an attaching screwhaving :i

part secured in said end of the insulator body against relative rotationto permit turning of the screw by the insulator body,

a U-shaped re-enforcing strap having an apertured transverse portiondisposed in said channeland having its legs engageable with oppositesides of the insulator body,

and fastening means disposed in front of said transverse openingsecuring said strap on the insulator'body.

In testimony whereof, I aix my signature. Y WILLIAMD. KYLE.

